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Virtualization

ID	Contact Title	Contact Name	Country	Rating


1	Sales Agent	Jaime Yorres	France	1 2 3 4 5
2	Sales Manager	Hanna Moos	Germany	1 2 3 4 5
3	Marketing Assistant	Patricio Simpson	France	1 2 3 4 5
4	Sales Associate	Matti Karttunen	Argentina	1 2 3 4 5
5	Sales Consultant	Paul Henriot	Italy	1 2 3 4 5
6	Sales Consultant	Matti Karttunen	England	1 2 3 4 5
7	Owner	Paul Henriot	Argentina	1 2 3 4 5
8	Marketing Assistant	Patricio Simpson	USA	1 2 3 4 5
9	Sales Manager	Patricio Simpson	France	1 2 3 4 5
10	Accounting Manager	Pascale Cartrain	Germany	1 2 3 4 5
11	Sales Agent	Hanna Moos	France	1 2 3 4 5
12	Accounting Manager	Elizabeth Lincoln	Bulgaria	1 2 3 4 5
13	Sales Manager	Antonio Moreno	Spain	1 2 3 4 5
14	Sales Representative	Pascale Cartrain	England	1 2 3 4 5
15	Marketing Manager	Howard Snyder	France	1 2 3 4 5
16	Sales Consultant	Patricio Simpson	France	1 2 3 4 5
17	Sales Consultant	Jaime Yorres	Germany	1 2 3 4 5
18	Accounting Manager	Howard Snyder	Bulgaria	1 2 3 4 5
19	Marketing Assistant	Howard Snyder	Germany	1 2 3 4 5
20	Sales Agent	Patricio Simpson	Austria	1 2 3 4 5
21	Owner	Hanna Moos	Germany	1 2 3 4 5
22	Marketing Assistant	Paul Henriot	Bulgaria	1 2 3 4 5
23	Sales Consultant	Georg Pipps	Austria	1 2 3 4 5
24	Sales Representative	Georg Pipps	Germany	1 2 3 4 5
25	Sales Manager	Antonio Moreno	England	1 2 3 4 5
26	Marketing Manager	Georg Pipps	Germany	1 2 3 4 5
27	Sales Consultant	Howard Snyder	USA	1 2 3 4 5
28	Sales Representative	Matti Karttunen	Bulgaria	1 2 3 4 5
29	Marketing Manager	Jaime Yorres	Spain	1 2 3 4 5
30	Sales Consultant	Patricio Simpson	Bulgaria	1 2 3 4 5
31	Sales Manager	Georg Pipps	Brazil	1 2 3 4 5
32	Marketing Manager	Hanna Moos	Germany	1 2 3 4 5
33	Marketing Manager	Paul Henriot	Spain	1 2 3 4 5
34	Owner	Pascale Cartrain	Argentina	1 2 3 4 5
35	Sales Representative	Elizabeth Lincoln	Germany	1 2 3 4 5
36	Accountant	Patricio Simpson	Brazil	1 2 3 4 5
37	Owner	Patricio Simpson	France	1 2 3 4 5
38	Sales Manager	Paul Henriot	Italy	1 2 3 4 5
39	Sales Consultant	Howard Snyder	Germany	1 2 3 4 5
40	Sales Manager	Antonio Moreno	England	1 2 3 4 5
41	Sales Manager	Patricio Simpson	Italy	1 2 3 4 5
42	Sales Manager	Jaime Yorres	England	1 2 3 4 5
43	Marketing Assistant	Elizabeth Lincoln	Argentina	1 2 3 4 5
44	Sales Manager	Paul Henriot	USA	1 2 3 4 5
45	Owner	Jaime Yorres	France	1 2 3 4 5
46	Sales Consultant	Georg Pipps	England	1 2 3 4 5
47	Accountant	Pascale Cartrain	Spain	1 2 3 4 5
48	Accountant	Elizabeth Lincoln	Germany	1 2 3 4 5
49	Sales Representative	Howard Snyder	USA	1 2 3 4 5
50	Owner	Elizabeth Lincoln	England	1 2 3 4 5
51	Owner	Patricio Simpson	USA	1 2 3 4 5
52	Owner	Pascale Cartrain	Germany	1 2 3 4 5
53	Marketing Manager	Pascale Cartrain	Germany	1 2 3 4 5
54	Accounting Manager	Pascale Cartrain	Brazil	1 2 3 4 5
55	Sales Associate	Antonio Moreno	France	1 2 3 4 5
56	Marketing Manager	Paul Henriot	Italy	1 2 3 4 5
57	Owner	Jaime Yorres	USA	1 2 3 4 5
58	Sales Consultant	Paul Henriot	England	1 2 3 4 5
59	Owner	Pascale Cartrain	Argentina	1 2 3 4 5
60	Sales Consultant	Antonio Moreno	England	1 2 3 4 5
61	Sales Agent	Howard Snyder	USA	1 2 3 4 5
62	Marketing Manager	Hanna Moos	USA	1 2 3 4 5
63	Sales Agent	Paul Henriot	Spain	1 2 3 4 5
64	Marketing Assistant	Hanna Moos	Austria	1 2 3 4 5
65	Sales Representative	Antonio Moreno	Bulgaria	1 2 3 4 5
66	Sales Manager	Antonio Moreno	Brazil	1 2 3 4 5
67	Sales Consultant	Hanna Moos	Spain	1 2 3 4 5
68	Sales Manager	Hanna Moos	Italy	1 2 3 4 5
69	Marketing Assistant	Hanna Moos	Bulgaria	1 2 3 4 5
70	Sales Consultant	Jaime Yorres	Argentina	1 2 3 4 5
71	Accounting Manager	Hanna Moos	Spain	1 2 3 4 5
72	Accountant	Pascale Cartrain	Germany	1 2 3 4 5
73	Sales Manager	Hanna Moos	Bulgaria	1 2 3 4 5
74	Marketing Assistant	Howard Snyder	USA	1 2 3 4 5
75	Sales Agent	Paul Henriot	Austria	1 2 3 4 5
76	Sales Agent	Paul Henriot	Austria	1 2 3 4 5
77	Sales Consultant	Hanna Moos	USA	1 2 3 4 5
78	Owner	Paul Henriot	Bulgaria	1 2 3 4 5
79	Accounting Manager	Elizabeth Lincoln	Argentina	1 2 3 4 5
80	Sales Manager	Elizabeth Lincoln	Bulgaria	1 2 3 4 5
81	Owner	Antonio Moreno	USA	1 2 3 4 5
82	Accounting Manager	Patricio Simpson	Brazil	1 2 3 4 5
83	Sales Consultant	Georg Pipps	England	1 2 3 4 5
84	Accountant	Elizabeth Lincoln	Argentina	1 2 3 4 5
85	Marketing Assistant	Georg Pipps	England	1 2 3 4 5
86	Sales Manager	Jaime Yorres	Brazil	1 2 3 4 5
87	Accounting Manager	Pascale Cartrain	England	1 2 3 4 5
88	Marketing Manager	Patricio Simpson	England	1 2 3 4 5
89	Accounting Manager	Hanna Moos	Spain	1 2 3 4 5
90	Accounting Manager	Pascale Cartrain	Brazil	1 2 3 4 5
91	Sales Agent	Georg Pipps	Brazil	1 2 3 4 5
92	Accountant	Antonio Moreno	Germany	1 2 3 4 5
93	Marketing Assistant	Jaime Yorres	France	1 2 3 4 5
94	Owner	Jaime Yorres	France	1 2 3 4 5
95	Sales Representative	Elizabeth Lincoln	Bulgaria	1 2 3 4 5
96	Sales Associate	Howard Snyder	Spain	1 2 3 4 5
97	Sales Manager	Patricio Simpson	Austria	1 2 3 4 5
98	Owner	Jaime Yorres	Germany	1 2 3 4 5
99	Accounting Manager	Howard Snyder	England	1 2 3 4 5
100	Sales Associate	Hanna Moos	Austria	1 2 3 4 5


...91 92 93 94 95 96 97 98 99 100 ... Item 93001 to 94000 of 300000 Page: of 300 GoPage size:

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Columns
- ID
- Contact Title
- Contact Name
- Country
- Rating

About this demo
C#
VB
Download demo code files
Isolate this demo as a stand-alone application

RadGrid's virtualization feature allows you to handle hundreds of thousands of rows without negatively impacting the user experience. The control achieves this thanks to its ItemsPerView property allowing you to control the number of items loaded at a time. Users can now scroll, as well as show, hide, resize and reorder columns without any waiting time.

This demo shows how quickly Telerik's ASP.NET DataGrid can handle user interactions with 300,000 items. You can configure the component to allow scrolling through the entire data set or only through the current page by using EnableCurrentPageScrollOnly property,.

<%@ Page Language="c#" CodeFile="DefaultCS.aspx.cs" Inherits="Telerik.GridExamplesCSharp.Performance.Virtualization.DefaultCS" %>

<%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>
<%@ Register TagPrefix="qsf" Namespace="Telerik.QuickStart" %>
<!DOCTYPE html>
<html xmlns='http://www.w3.org/1999/xhtml'>
<head runat="server">
    <title>Telerik ASP.NET Example</title>
    <link href="styles.css" rel="stylesheet" />
</head>
<body>
    <form id="form1" runat="server">
    <telerik:RadScriptManager runat="server" ID="RadScriptManager1" />
    <telerik:RadSkinManager ID="RadSkinManager1" runat="server" ShowChooser="true" />
    <telerik:RadAjaxLoadingPanel runat="server" ID="RadAjaxLoadingPanel1"></telerik:RadAjaxLoadingPanel>
    <telerik:RadAjaxPanel runat="server" ID="RadAjaxPanel" LoadingPanelID="RadAjaxLoadingPanel1" CssClass="demo-container">
        <telerik:RadGrid RenderMode="Lightweight" ID="RadGrid1" runat="server"  AutoGenerateColumns="false"
            AllowSorting="true" GroupingEnabled="false"
            EnableHeaderContextMenu="true" AllowPaging="true" PageSize="1000" OnNeedDataSource="RadGrid1_NeedDataSource">
            <MasterTableView TableLayout="Fixed">
                <Columns>
                    <telerik:GridBoundColumn UniqueName="ID" HeaderText="ID" HeaderStyle-Width="50px" DataField="ID"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactTitle" HeaderText="Contact Title" HeaderStyle-Width="150px" DataField="ContactTitle"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactName" HeaderText="Contact Name" HeaderStyle-Width="150" DataField="ContactName"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="Country" HeaderText="Country" HeaderStyle-Width="100px" DataField="Country"></telerik:GridBoundColumn>
                    <telerik:GridRatingColumn UniqueName="Rating" HeaderText="Rating" HeaderStyle-Width="100px" DataField="Rating"></telerik:GridRatingColumn>
                </Columns>
            </MasterTableView>
            <ClientSettings ReorderColumnsOnClient="true" AllowColumnsReorder="true" ColumnsReorderMethod="Reorder">
                <Virtualization EnableVirtualization="true" InitiallyCachedItemsCount="2000"
                    LoadingPanelID="RadAjaxLoadingPanel1" ItemsPerView="100"/>
                <Scrolling AllowScroll="true" UseStaticHeaders="true" ScrollHeight="500px" />
                <Resizing AllowColumnResize="true" />
            </ClientSettings>
            <PagerStyle Mode="NextPrevNumericAndAdvanced"></PagerStyle>
        </telerik:RadGrid>
    </telerik:RadAjaxPanel>
    </form>
</body>
</html>

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